EP 2310885 B1 20170329 - RETROREFLECTIVE ARTICLES AND DEVICES HAVING VISCOELASTIC LIGHTGUIDE
Title (en)
RETROREFLECTIVE ARTICLES AND DEVICES HAVING VISCOELASTIC LIGHTGUIDE
Title (de)
RÜCKSTRAHLENDE ARTIKEL UND VORRICHTUNGEN MIT VISKOELASTISCHEM LICHTLEITER
Title (fr)
ARTICLES RÉTRORÉFLÉCHISSANTS ET DISPOSITIFS POSSÉDANT UN GUIDE D'ONDE OPTIQUE VISCOÉLASTIQUE
Publication
Application
Priority
- US 2009050012 W 20090709
- US 7963908 P 20080710
- US 11486508 P 20081114
- US 16997309 P 20090416
- US 18548209 P 20090609
Abstract (en)
[origin: WO2010006102A2] Disclosed herein is an optical device having a light source, a viscoelastic lightguide and a retroreflective film suitable for retroreflecting light. Light from the light source enters the viscoelastic lightguide and is transported within the lightguide by total internal reflection. The optical device may have a "front lit" configuration such that light being transported within the lightguide is extracted and retroreflected by the film toward a viewer. The optical device may have a "back lit" configuration such that light being transported within the lightguide is extracted and transmitted through the film toward a viewer. The retroreflective film may comprise beaded retroreflective sheeting such as that used in traffic signs and markings.
IPC 8 full level
F21V 8/00 (2006.01); G02B 5/128 (2006.01); G09F 13/04 (2006.01); G09F 13/16 (2006.01)
CPC (source: EP KR US)
G02B 5/12 (2013.01 - KR); G02B 5/128 (2013.01 - EP US); G02B 6/0055 (2013.01 - EP US); G09F 13/16 (2013.01 - EP US); G09F 13/0472 (2021.05 - US)
Citation (examination)
JP 2003242815 A 20030829 - SIGMA DENSHI KOGYO KK, et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010006102 A2 20100114; WO 2010006102 A3 20100408; CN 102138087 A 20110727; CN 102138087 B 20170301; EP 2310885 A2 20110420; EP 2310885 A4 20120208; EP 2310885 B1 20170329; JP 2011527774 A 20111104; JP 5539980 B2 20140702; KR 101578251 B1 20151216; KR 20110028391 A 20110317; TW 201007647 A 20100216; US 2011122494 A1 20110526; US 2015316693 A1 20151105; US 9086535 B2 20150721; US 9851482 B2 20171226
DOCDB simple family (application)
US 2009050012 W 20090709; CN 200980134209 A 20090709; EP 09795155 A 20090709; JP 2011517591 A 20090709; KR 20117003016 A 20090709; TW 98123266 A 20090709; US 200913003193 A 20090709; US 201514741503 A 20150617